Tool holder



Feb. 26, 1952 A J LEVElLLE 2,587,179

TOOL HOLDER Filed Dec. 15, 1949 7.2 g 5 INVENTOR. z .1 46 gzz wzwm'zzfi k L, I

Patented Feb. 26, 1952 UNI-TED STA-res eA'rENr oFFICE TOOL HOLDER Albert J. Leveille, Johnston, R. 1.

Application December 15, 1949, Serial No. 133,046

1 Claim.

This invention relates to tool holders for lathes or other machine tools.

An object of this invention is to provide a three-in-one tool holder which includes means whereby the bit or cutter may be rigidly secured at a straight or oblique angle with respect to the holder.

Another object of this invention is to provide a tool holder embodying an elongated bar having a head at its outer end, with the head formed with a pair of crossed channels on one side and a longitudinal channel on the opposite side. The bit or cutter is held within a selected channel by means of clamping pin and the bit or cutter can be adjusted endwise.

A further object of this invention is to provide a tool holder of this kind which is stron and rugged and at the same time is of simple construction.

With the above and other objects in view, my invention consists in the arrangement, combination and details of construction disclosed in the drawing and specification, and then more particu larly pointed out in the appended claim.

In the drawing,

Figure 1 is a bottom plan view of a tool holder constructed according to an embodiment of this invention,

Figure 2 is a fragmentary side elevation of the device,

Figure 3 is a sectional view taken on the line 3-3 of Figure 2,

Figure 4 is a top plan view of the device,

Figure 5 is a fragmentary sectional view taken on the line 5-5 of Figure 4.

Referring to the drawing, the numeral Iil designates generally an elongated bar adapted to be mounted in a tool rest or support, and the bar I has formed integral with the forward or outer end thereof a head II. The head II on one side thereof is provided with a pair of crossed channels or grooves I2 and I3, which in the present instance are disposed at substantially 60 one from the other, and 30 from the longitudinal center of the bar Ill and the head II.

The head II On the opposite side thereof, is formed with a longitudinally extending channel or groove I4, and the grooves I2, l3 and I4 intersect a transversely disposed bore I which is formed through the head II. A stud or cutter clamping member I6 is adapted to loosely engage in the bore l5 and is formed with an opening I1 through which a bit or cutter I8 is adapted to engage. The stud or clamping member I6 is formed with a threaded stud I9 at one end there- 2 of on which a nut 20 is adapted to engage, and a washer 2| is interposed between the nut 20 on the adjacent side or face of the head I I.

The stud or clamping member I6 is also formed with a threaded opening 22 within which a set screw 23 engages, the set screw 23 bearing against the adjacent face of the bit or cutter I8. A split resilient retaining ring 24 engages about the outer side of the stud I6 and is adapted to bear against the adjacent face or side of the head II so that the stud I6 Will be held against dropping out of the bore I5 when the nut 20 is lowermost and either the nut 20 or the set screw 23 is loosened.

In the use of this tool holder the shank or bar I0 is secured in a conventional manner in the tool rest of the lathe or other machine tool and the bit or cutter I8 is disposed in a selected one of the channels I2, I3 or I4. The cross channels are provided so that the cutter operations may be made either right or left hand, whereas the longitudinal channel I4 is provided for using the holder in normal work cutting operations.

With a tool holder as herein disclosed the three individual holders at present in use are combined into one holder, the holder permitting right and left cutting or boring and straight cutting. This tool can be used on'lathes, planers, shapers or other machine tools and will eliminate two holders now used.

I do not mean to confine myself to the exact details of construction herein disclosed, but claim all variations falling within the purview of the appended claim.

What I claim is:

A tool holder comprising an elongated bar, a head on one end of said bar, said head having a pair of crossed channels in one face thereof and a longitudinal channel in the opposite face thereof, said head having a cylindrical bore intersecting said channels, a cylindrical clamping stud rotatable in said bore and having a transversely disposed opening through which a bit is adapted to engage, said bit being adapted to seat in a selected one of said channels and projecting through said opening, a threaded stud at one end of said clamping stud, a nut on said threaded stud, a washer of greater diameter than said bore to prevent linear displacement of said clamping stud through said bore in one direction upon removal of said stud interposed between said nut and the adjacent face of said head, a set screw threaded into the opposite end of said clamping stud adapted to bear against said bit to hold the latter against movement in saidopening, said opposite end having a peripheral channel thereabout and means of greater extent than said bore on the end of said clamping stud containin said set screw to prevent linear displacement of said stud in the other direction upon removal of said bit, said last mentioned means comprisin a split clamping ring seating in said channel and surrounding said opposite end of said clamping stud, removal of said clamping ring permitting ready withdrawal of said clamping stud.

ALBERT J. LEVEILLE.

REFERENCES CITED UNITED STATES PATENTS Number Number 4 126,768 556317 Name Date Armstrong May 28, 1901 Colton July 12, 1910 Duckett June 3, 1913 Wermes Apr. 5, 1921 FOREIGN PATENTS Country Date Germany Mar. 12, 1901 Great Britain Sept. 29, 1943 

